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IS 1570 (Part 4):1988 50Cr4 Steel: Specifications & Listings

IS 1570 (Part 4):1988 50Cr4: 50Cr4: alloy steel (constructional or spring group) with specified chemical composition. Specified in IS 1570 (Part 4):1988.

Category: Alloy Steel
Grade Details
GradeIS 1570 (Part 4):1988 50Cr4
Standard IS 1570 (Part 4):1988
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
BS 970 (Part 3) 530M40 BS 970 (Part 3):1991 UK No activity yet
IS 1570 (Part 4) 50Cr4V2 IS 1570 (Part 4):1988 India No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
IS 1570 (Part 4) 50Cr4V2 IS 1570 (Part 4):1988 Strong Match
BS 970 (Part 3) 530M40 BS 970 (Part 3):1991 Strong Match
BS 970 (Part 1) 530M40 BS 970 (Part 1):1983 Close Alternative
SAE J404 5150 SAE J404:2009 Close Alternative
SAE J404 5150 SAE J404:2000 Close Alternative
BS 970 (Part 1) 530A36 BS 970 (Part 1):1983 Close Alternative
BS 970 (Part 1) 530A40 BS 970 (Part 1):1983 Close Alternative
IS 1570 (Part 4) 60Cr4V2 IS 1570 (Part 4):1988 Close Alternative
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C Si Mn Cr
0.45-0.55 0.10-0.35 0.60-0.90 0.90-1.20
Mechanical Properties
Tensile Strength >=1090 MPa
Yield Strength >=890 MPa
Condition Tubes, hardened and tempered

More data from IS 1570 (Part 4):1988

From the standard
Tensile limits, tubes 1 conditions
ConditionTensile strength, min (MPa)0.2 % proof stress, min (MPa)
Hardened and tempered1090890
Elongation printed as 9 310 over actual tensile strength (MPa).
Source: IS 1570 (Part 4):1988, Table 11

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